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arXiv · 0705.1353

A Catalog of Absorption Lines in Eight HST/STIS E230M 1.0 < z < 1.7 Quasar Spectra

N. Milutinovic·T. Misawa·R. S. Lynch·J. R. Masiero·C. Palma·J. C. Charlton·D. Kirkman·S. Bockenhauer·D. Tytler
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Abstract

We have produced a catalog of line identifications and equivalent width measurements for all absorption features in eight ultraviolet echelle quasar spectra. These spectra were selected as having the highest signal-to-noise among the HST/STIS spectra obtained with the E230M grating. We identify 56 metal-line systems toward the eight quasars, and present plots of detected transitions, aligned in velocity-space. We found that about 1/4 - 1/3 of the features in the Lya forest region, redward of the incidence of the Lyb forest, are metal lines. High ionization transitions are common. We see both O VI and C IV in 88 - 90% of the metal-line systems for which the spectra cover the expected wavelength. Si III is seen in 58%, while low ionization absorption in C II, Si II, and/or Al II is detected in 50% of the systems for which they are covered. This catalog will facilitate future studies of the Lya forest and of metal-line systems of various types.

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N. Milutinovic, T. Misawa, R. S. Lynch, J. R. Masiero, C. Palma, J. C. Charlton, D. Kirkman, S. Bockenhauer, D. Tytler. 2007-05-10. A Catalog of Absorption Lines in Eight HST/STIS E230M 1.0 < z < 1.7 Quasar Spectra. https://doi.org/10.1111/j.1365-2966.2007.12097.x

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